Digital Commons Network^™

Investigation Of D-Π-A Re (1) Complexes For The Homogenous Photocatalytic Reduction Of Co2, Ryan M. Chafin

Theses and Dissertations--Chemistry

Increasing anthropogenic emission of CO₂ into the atmosphere is a global issue that shows no signs of deceleration due to the current trends in dependencies on fossil fuels for energy demand. Although deleterious in nature, this greenhouse gas can serve as a useful feed-stock for the production of small-carbon-chain commercial chemicals if the factors owing to its inertness can be overcome. Fortuitously, CO₂’s chemically inert nature is already circumvented in nature through an elegant cascade of biochemical reactions known as photosynthesis, which nearly all plants and some families of bacteria exploit to produce simple sugars for metabolic …

Effects Of A-Site Cation Structure And B-Site Metal On Optical And Electronic Properties Of 2d Ruddlesden-Popper Phase Tin-Based Hybrid Perovskites, Henry Pruett

Theses and Dissertations--Chemistry

Organic metal halide perovskites (HPs) are attractive materials for a variety of electronic applications due to their low cost, tunable band gaps, excellent charge transport properties, and high photoluminescence efficiency. As such, HPs are being investigated for use in solar cells, photodetectors, X-ray detectors, light emitting diodes, field effect transistors, lasers, resistive random-access memory, etc. Currently the most popular metal used in HPs is lead, but the use of lead comes with the potential for heavy metal exposure. Tin-based perovskites offer a less hazardous alternative, but their optoelectronic properties lag behind those of lead and less work has been done …

The Physiology Of Exercise, Rosie Lanphere

Open Educational Resources

The Physiology of Exercise (3rd Edition) is an essential resource for upper-level undergraduates studying exercise science. Written by Rosie Lanphere, PhD, CSCS, this text provides a clear and comprehensive exploration of how the human body responds and adapts to physical activity.

Covering metabolism, energy expenditure, and the integrated roles of the nervous, cardiovascular, endocrine, muscular, and respiratory systems, this edition reflects the latest research and practical applications in the field.

Designed with students in mind, each chapter includes learning objectives, key terms, and scholarly questions to reinforce understanding. Whether preparing for a career in exercise science or professional certification, this …

Secondhand Tobacco Smoke Exposure And Sleep Disturbance In School-Aged Children In Appalachian Ohio, Ketrell Mcwhorter, Christine Kim, Timothy J. Hilbert, Danielle E. Mcbride, Anthony A. Mangino, Patrick J. Parsons, Kurunthachalam Kannan, Erin N. Haynes

Epidemiology and Environmental Health Faculty Publications

Introduction: Secondhand tobacco smoke (SHS) exposure remains a major public health concern for children and has been implicated in sleep disturbances through biological and behavioral mechanisms. Different methods of measuring SHS exposure have yielded inconsistent results. This study examined the relationship between SHS exposure and sleep among rural Appalachian 7–9-year-olds, utilizing three SHS measurements: natural log-transformed (ln) serum cotinine concentrations, dichotomized serum cotinine levels (≥0.05 vs. <0.05 ng/ml), and parent/caregiver report of ≥1 smoker in the home. We hypothesized SHS-exposed children would have a significantly higher prevalence of sleep disturbance—e.g., short sleep, frequent snoring, night awakenings—compared to unexposed, regardless of measurement method. Methods: We used data from the Marietta Community Actively Researching Exposure Study, a cohort of 404 children in Marietta and Cambridge, Ohio. Sleep disturbances were parent/caregiver-reported. Linear models were used for continuous outcomes to estimate beta coefficients; log-binomial models with generalized estimating equations (exchangeable correlation) were applied for dichotomized outcomes to estimate prevalence ratios (PR), each with 95% confidence intervals (CI). Results: Twenty-six percent of children had a parent/caregiver report of ≥1 sleep disturbance. There was a 35% increased prevalence of short sleep [PR = 1.35 (95%CI:1.02–1.80), p =.04] with each unit increase of ln serum cotinine levels, adjusting for age, sex, parent education, BMI percentile, and history of breathing difficulties in the past two years. Increasing ln serum cotinine levels were associated with a significant 5.5-min decrease in average sleep duration in age-adjusted models. Conclusions: Higher SHS exposure was associated with poorer sleep outcomes, with serum cotinine emerging as the only measure linked to short sleep, underscoring the importance of smoke-free environments, particularly in rural communities, and objective exposure assessment.

A Comparison Of Fecal Output Determined By Total Fecal Collection Or Titanium Dioxide In Horses, Ashley L. Fowler, Morgan B. Pyles, Susan H. Hayes, Andrea D. Crum, Laurie M. Lawrence

Animal and Food Sciences Faculty Publications

Total fecal collection studies to determine digestibility of nutrients are costly and laborious. The use of externally dosed indigestible markers, such as titanium dioxide (TiO₂), to estimate digestibility using spot samples could be advantageous, but studies validating their use in horses are inadequate. Two experiments were conducted to determine if TiO₂ in fecal spot samples effectively estimated fecal output in horses. In Exp. 1, four mature horses were fed a forage-based diet (85:15 forage: concentrate) split into two equal meals with 1.75±0.03g TiO₂/kg DM (10g TiO₂) per day top-dressed on their daily ration. …

Resilience After Prenatal Substance Exposure: Exploring The Role Of Cumulative And Specific Protective Factors In Predicting Toddlerhood Temperament Profiles, Anjeli Elkins

Theses and Dissertations--Psychology

Objective

Prenatal exposure to common substances, including nicotine, marijuana, cocaine, methamphetamine, opiates, and alcohol, has been linked to a wide range of psychiatric disorders and neurodevelopmental impairments. Identifying protective factors that may improve temperament profiles in toddlers who have experienced prenatal substance exposure may protect against these adverse outcomes and is crucial for developing targeted early interventions.

Methods

Participants (n=92; Mage = 28.7 years; 47.0% White) were biological mothers of toddlers (Mage = 22.6 months) with prenatal substance exposure. Mothers responded to an online survey that gathered information on substance use during pregnancy, proposed perinatal protective factors, and child temperament. …

Multidimensional Health Outcomes In Lgbtq+ Older Adults In The United States: Individual And Community-Level Protective Factors, Emily P. Lapidus

Theses and Dissertations--Psychology

Despite a lifetime of systematic barriers, LGBTQ+ individuals age into late adulthood, likely due to various protective factors. Guided by the Iridescent Life Course Framework (ILCF; Fredriksen-Goldsen & Muraco, 2019), I analyzed unique protective factors at two levels: (1) individual psychological factors (i.e., resilience, identity management) and (2) community-level factors (i.e., LGBTQ+ community connectedness, social support). Health was operationalized as mental health, physical health, and health-promoting behaviors. The present study accounted for covariates (i.e., financial barriers to healthcare, felt subjective age discrepancy, lifetime discrimination). I hypothesized that both stronger individual and community factors would be associated with better physical and …

Exploring The Effects Of Transcranial Direct Current Stimulation Of The Right Inferior Frontal Gyrus On Inhibitory Control In Posttraumatic Stress Disorder, Colton Rippey

Theses and Dissertations--Psychology

Background: The right inferior frontal gyrus (rIFG) is implicated in stop signal reaction time (SSRT) performance – a common measure of inhibitory control – and emotional expression and control. Individuals with posttraumatic stress disorder (PTSD) exhibit poorer stop SSRT performance, which is associated with rIFG hypoactivity. Neuromodulation of the rIFG with transcranial direct current stimulation (tDCS) can significantly improve inhibitory control and reduce fearful responding to threatening stimuli. Research has yet to test the effects of multifocal tDCS targeting the rIFG on inhibitory control or emotional reactivity in individuals with PTSD.

Methods: The current study aims to examine the impact …

Why Are Women Tired? Examining Sex-Dependent Effects Of Behavioral Rhythms On Perceived Sleepiness, Maricel Schuler

Theses and Dissertations--Psychology

Sleep complaints in women emerge at menarche and coincide with reproductive hormonal fluctuations throughout the monthly menstrual cycle. To our knowledge, we are the first study (N = 44) to utilize a validated algorithm that uses actigraphy-derived light and activity data in a novel approach to estimate circadian phase, referred here as the photobehavioral phase. We hypothesize that women will have earlier photobehavioral phases, larger phase angles, poorer perceived sleep quality, and greater sleepiness compared to men. In addition, we hypothesize that the perimenstrual phase will be associated with poorer sleep within a subsample of women (N = 15). Contrary …

Examining Values In The Treatment Of Borderline Personality Disorder: A Single-Case Experimental Design, Nicole Stumpp

Theses and Dissertations--Psychology

Borderline personality disorder impacts roughly 1.6% of the general population yet only a quarter of people with BPD are able to access treatment. Understanding the mechanisms that promote behavior change in treatment is crucial for improving care for this population. Experiential avoidance has been linked to risky behaviors, a prevalent and debilitating symptom observed in BPD. Values identification may be a fruitful avenue for engaging experiential avoidance in treatment. The goal of the present study is to understand the unique and combined effects of values identification and behavior change skills (i.e., opposite actions, exposure) on experiential avoidance (target), maladaptive behavior …

Interplay Between Computational Techniques And Quantum Theory: Advancing Quantum Chaos And Quantum Error Correction, Refaat Ismail

Theses and Dissertations--Physics and Astronomy

This dissertation investigates computational techniques addressing critical problems arising within quantum chaos and quantum error correction (QEC). First, we investigate quantum dynamics via the Lanczos algorithm, establishing how its computational features — branching patterns, convergence, and complexity saturation — relate to physical properties like spectral statistics and operator matrix elements. We derive a formula connecting Lanczos coefficients to spectral densities for two-branched Lanczos sequences, revealing how branching patterns encode level repulsion—a hallmark of quantum chaos. Furthermore, we develop an analytic framework predicting Krylov complexity saturation from static system properties alone. Specifically, we decompose the saturation value into a spectral density-dependent …

Laser–Assisted Free–Free (Laff) Electron Scattering: An Elastic Angular Distribution In Argon And The Use Of A Novel Pulsed-Laser Multipass System In Laff Experiments, Charles M. Weaver

Theses and Dissertations--Physics and Astronomy

Laser–assisted free–free experiments investigate the emission or absorption of photons when an electron scatters from an atom in the presence of a laser field.

We measured the relative differential cross sections for 350 eV electrons scattered by an argon target in the presence of 1.17 eV photons from a Nd:YAG laser. The angular distribution for elastically scattered 350 eV electrons was measured over scattering angles from 4◦ to 80◦. This distribution exhibits a pronounced maximum near 47◦ and is symmetric about this angle, as predicted by a Kroll–Watson approximation (KWA) calculation for the experimental kinematics. These measurements directly test a …

Simulations Of Electron Detection Systematic Errors For A Ucna+ Experiment, Rashika Gupta

Theses and Dissertations--Physics and Astronomy

The Ultracold Neutron Asymmetry+ (UCNA+) experiment at the Los Alamos Neu- tron Science Center (LANSCE) Ultracold Neutron source is an upgrade of the UCNA experiment, designed to measure the neutron beta decay asymmetry parameter, A 0 , with a precision of less than 0.2% using polarized ultracold neutrons (UCN). Neutron beta decay is governed by the weak interaction, and a precise measurement of A 0 provides a determination of the axial-vector to vector coupling ratio, λ = gA /gV . When combined with a measurement of the neutron lifetime, this allows the extraction of the Cabibbo-Kobayashi-Maskawa (CKM) matrix element Vud …

Optimizing External Radioactive Calibration Source Strength To Maximize The Livetime Of The Nexo Detector, Thakur P. Bhatta

Theses and Dissertations--Physics and Astronomy

The proposed next Enriched Xenon Observatory (nEXO) experiment aims to detect neutrinoless double beta decay in 136Xe, a rare process with profound implications for particle physics and our understanding of the neutrino. Achieving the required sensitivity demands ultra-low background conditions, making both material radiop urity screening and precise detector calibration essential. This dissertation addresses two key calibration challenges in preparation for nEXO. First, I investigated discrepancies in calibration efficiency measurements of the high-purity germanium (HPGe) detector named as GeIV located 4850 feet under ground at the Sanford Underground Research Facility, Lead, SD. The root cause for the discrepancy was found …

Precision Measurement Of The Muon’ S Anomalous Precession Frequency Using Energy Integrated Analysis In The Fermilab Muon G- 2 Experiment, Joseph Peck

Theses and Dissertations--Physics and Astronomy

This dissertation investigates the anomalous magnetic moment of the muon, aµ, through the Fermilab Muon g -2 Experiment, which aims to measure aµ to a precision of about 140 parts-per-billion.

Muons were injected into a magnetic storage ring where their decay positrons were detected by calorimeters. The changing spin and momentum orientation leads to an oscillation in decay positron counts, known as the anomalous precession frequency ! a. Using the magnetic field and !a measurements, we can determine the value of a µ. This study focuses on the Q-Method determination of !a, which utilizes an energyintegrated reconstruction rather than high-energy …

A Multidisciplinary Approach To The Thermal And Non-Thermal Mechanisms In Galaxy Clusters, Sheng-Chieh Lin

Theses and Dissertations--Physics and Astronomy

Galaxy clusters form at the intersections of the cosmic web and carry imprints of the structure formation history of the universe. As massive, multi-component systems, they offer unique insights into the astrophysical processes that govern both structure formation and galaxy evolution. Observable across the full electromagnetic spectrum, clusters emit photons through a variety of mechanisms, each tracing different physical processes. This dissertation investigates both the thermodynamic and non-thermal properties of the intracluster medium (ICM) to better understand the physical processes shaping observed phenomena. It comprises three main studies, each targeting a different aspect of galaxy cluster physics. In the second …

Structural And Physical Properties Of Solid State Materials: Cegage, Cssni3, And Yb2Si2-XGeXAl, Liam J. Scanlon

Theses and Dissertations--Physics and Astronomy

We present studies of three independent solid state materials: CeGaGe, CsSnI₃, and Yb₂Si_2-xGe_xAl.

CeGaGe is a magnetic candidate Weyl semimetal. Magnetic Weyl semimetals have possible technological applications due to their electronically conducting bulk states, magnetic states, and topologically protected surface states. We grew single crystals of CeGaGe using the zone-refinement method and flux-growth method. With single crystal X-ray and neutron diffraction, we found that zone-refined CeGaGe crystallizes with the I4₁md symmetry (space group 109). With single crystal X-ray diffraction, we found that flux-grown samples of CeGaGe have the …

Implementing And Evaluating A Pilot Interprofessional Training Program To Engage Health Care Teams In Cost Of Care Conversations, Jean Edward, Kimberly D. Northrip, Mary Kay Rayens, Julia Costich, Andrea Welker, Rachel O’Farrell, John A. D'Orazio

Nursing Faculty Publications

Introduction: This study evaluated the impact of Financial and Insurance Navigation Assistance-Training – a pilot interprofessional training program to facilitate cost of care (CoC) conversations and address health-harming social determinants of health in a pediatric hematology–oncology clinic.

Methods: A pre–post study design was used to evaluate the impact of Financial and Insurance Navigation Assistance-Training on an interprofessional health care team's (clinicians, social workers, financial navigator, and legal advocates) knowledge, attitudes, and behaviors related to CoC conversations and screening, referring, and collaborating with interprofessional team members. Data were collected …

Hpv Self-Sampling Promotion Among African American (Aa) And Sub-Saharan African (Sai) Immigrant Women: Adaptation And Usability Testing, Adebola Adegboyega, Gia Mudd-Martin, Nancy Schoenberg, Mark Dignan

Nursing Faculty Publications

Background: Cervical cancer (CC) rates have declined nationally but rates remain high in Black women with most cases occurring among unscreened and under-screened women. This paper describes the adaptation, acceptability, and useability of an education intervention, “Health is Wealth: A Cervical Health Intervention”, to promote cervical screening and reduce perceived barriers to CC screening among two subgroups of Black women: African American (AA) and sub-Saharan African immigrant (SAI) women.

Methods: In this paper, we describe the process of adapting the Health is Wealth intervention using the Barrera and Castro adaptation framework. The iterative adaptation process included formative focus groups (n …

How To Eat Right And Why We Ask That Question, Heather N. Carpenter

Theses and Dissertations--Gender and Women's Studies

What does it mean to “eat right?” The notion is, of course, culturally, historically, nationally, politically, ethnically, and class determined. For the purposes of this project, however, I am particularly interested in changing notions of what it means to “eat right” within the post-World War II to the early new millennium American context, as such notions are represented within the prescriptions of popular culture. I turn to popular culture because this is the commons of the hegemonic call to “normalcy”—this is where we all learn to imitate, aspire, or rebel against a generic American consumer-self in conformity with the biases, …

International School Leaders’ Lived Experiences Of Crises And Perceptions Of Trust, Shary L. Marshall

Theses and Dissertations--Educational Leadership Studies

International school leaders worldwide have navigated their schools through a variety of crises. Their unique lived experiences offer insights into the role of trust in leadership, particularly during times of crisis.

This qualitative study employed a phenomenological approach to explore the lived experiences of 12 experienced international school leaders. Data was collected through semi-structured interviews. Using the theoretical lenses of authentic leadership, sensemaking, loose coupling, and crisis leadership, this study illuminates the central role of trust in leading schools through crises.

Three significant themes emerged from the analysis. First, trust is foundational to leadership and is built through intentional, transparent …

Increasing Daily Living Independence Using Video Modeling In Middle School Students With Intellectual Disability, Pamela J. Sullivan

Theses and Dissertations--Educational Leadership Studies

This study used a multiple probe across participants design to (a) evaluate the use of a mobile device (i.e., iPad) for video modeling to increase functional daily living skills and (b) evaluate the use of system of least prompts to teach students to self-instruct. In baseline, the classroom teacher asked participants to start their tasks and collected performance data. In the technology training condition, the teacher implemented a system of least prompts procedure to teach participants to initiate use of the iPad, navigate to a training video model, pause/play videos of training tasks, and perform the modeled training tasks. After …

A Qualitative Study: Supports Enabled By K-8 School Leaders To Bolster The Success Of Teachers In Their Mathematics Departments, Elizabeth A. Mercurio

Theses and Dissertations--Educational Leadership Studies

Despite decades of national policy efforts and reforms, mathematics achievement in public education in the United States, particularly in urban areas, remains persistently low, underscoring the critical need for effective leadership and targeted professional development to maximize student learning. There is limited research on the leadership approaches of building-level school leaders who have effectively strengthened mathematics departments and enhanced teacher capacity to improve student achievement. This qualitative study employed semi-structured interviews with building-level school leaders who have demonstrated success in fostering highly effective mathematics instruction to examine the leadership styles of effective urban school leaders and their use of professional …

Innovative Biomechanical And Engineering-Based Assessments Of Hip Mechanics In Individuals With Hip-Related Pain, Holly M. Stanze

Theses and Dissertations--Kinesiology and Health Promotion

Individuals with hip-related pain exhibit altered movement patterns, and worse fear of movement (kinesiophobia), compared to asymptomatic controls. Exacerbation of hip pain during movement and the role of hip symptom duration may help further our understanding of specific movement patterns that are associated with hip-related pain. A better understanding of the potential connections between hip-related symptom duration, kinesiophobia, hip pain during movement, and lower limb mechanics in those with hip-related pain may allow for more efficient referrals to clinicians and lead to more effective rehabilitation. In addition, the impact of hip-related pain on intra-articular hip loading patterns is not well …

Rasch Model Utilization Towards Developing An Instrument For Measuring Creative Drive, David W. Stenulson

Theses and Dissertations--Educational Policy Studies and Evaluation

Creativity is commonly assessed across undergraduate programs as a graduation requirement. However, a considerable amount of literature suggests that creativity is a complex, multidimensional construct, and more efficient ways of assessing it should be explored with multiple measures representing different creative aspects. This exploratory pilot study sought to take steps in developing a supplemental instrument designed to measure creative drive, a theoretical construct with predictive potential for future creative output. In order to gain a greater understanding of the nature of creative drive and gauge accuracy of initial thinking in terms of item writing, the Creative Drive Assessment (CDA), a …

Exploring College Students’ Motivation For Physical Activity: Applications Of Self-Determination Theory And The Role Of Health And Wellness Education, Anne Russell Blevins

Theses and Dissertations--Kinesiology and Health Promotion

This dissertation includes three pieces of writing that aim to show the importance of physical activity for all ages but specifically college-aged students. The first piece of writing (Chapter 2) includes a teaching tip written for the Journal of Physical Education, Recreation, and Dance. Research has shown that dance was a subject of the past and many teachers did not feel comfortable teaching it. This practical piece was written to help show K-12 physical education teachers effective ways to involve students in physical activity specifically through teaching dance, mainly through using the “Teaching Dance for Understanding” model.

The second section …

Proximity And Density Of Tobacco Retail Locations To Kentucky Schools And The Relationship To Youth Perceptions Of Harm And Susceptibility To E-Cigarette Use, Hannah Cardona

Theses and Dissertations--Kinesiology and Health Promotion

Purpose: To explore the potential relationship between tobacco retailer proximity/density around Kentucky elementary, middle, and high schools, and students’ perceptions, perceived norms, susceptibility to, and use of e-cigarettes. Design: A mixed-methods analysis of youth’s self-reported survey results and geographical data. Setting: 106 Kentucky elementary, middle, and high schools which participated in #iCANendthetrend’s tobacco education program between September 2023 and May 2024. Subjects: Convenience sample of students from Ky schools (N = 7,823) Measures: Items assessing e-cigarette use, susceptibility, perceptions, and perceived norms. Analysis: ANOVA tests used to compare responses of elementary, middle, and high school students. Chi-squared tests were used …

Scholars And Schisms: A History Of Antebellum Conflicts Over Slavery At Central Kentucky Liberal Arts Colleges, Wyatt M. Driskell

Theses and Dissertations--Educational Policy Studies and Evaluation

This dissertation explores how debates about slavery impacted constituents at four early liberal arts colleges (Berea, Centre, Georgetown, and Transylvania) in antebellum central Kentucky. In addition to focusing on how these colleges participated in, responded to, and helped shape regional debates over slavery, this study also explores how college leaders’ consideration of slavery was intertwined with religion, politics, and the financial pressures inherent in operating a 19th-century institution of higher education. From archival research, I argue that these constituents were not passive participants in this process. In addition to considering slavery from religious, moral, or political perspectives, leaders advanced positions …

Restorative Justice In Early Childhood Education: A Professional Development Model And Observational Study Of Classroom Implementation, Sarah Cummins

Theses and Dissertations--Education Sciences

This three-article dissertation explores the use of restorative justice (RJ) in educational settings, with a specific focus on early childhood programs. Restorative justice is a conflict resolution approach that prioritizes repairing harm, restoring trust, and empowering individuals to self-advocate rather than relying solely on punitive measures. While research has demonstrated the success of RJ in middle and high schools, and to some extent in elementary schools, limited attention has been given to its application in early childhood education. This dissertation examines the potential benefits of RJ in early childhood classrooms, including fostering social-emotional learning, student-led conflict resolution, and a positive …

Implementation Of Project-Based Instruction In Statistics Higher Education Courses, Jennifer A. Daddysman

Theses and Dissertations--Education Sciences

Project-based instruction is an instructional methodology based in constructivism that aligns with recommendations from the American Statistical Association for teaching statistics, including incorporating real-world data and examples, collaboration, and scaffolding (GAISE College Report ASA Revision Committee, 2016; GAISE Steering Committee, 2024; Krajcik & Blumenfeld, 2005; Tishkovskaya & Lancaster, 2012). This study examined current use of project-based instruction in United States higher education courses in statistics and the supports for and challenges to implementing this type of instruction.

This study used qualitative research methodology in the integrative pedagogy and diffusion of innovation frameworks. Voluntary response surveys were distributed via two sections …